Begin to be now what you will be hereafter.
Things do not happen. Things are made to happen.
Expect problems and eat them for breakfast.
Who seeks shall find.
If you can dream it, you can do it.
Wherever you are - be all there.
Well done is better than well said.
Leap, and the net will appear.
Either you run the day or the day runs you.
Be gentle to all and stern with yourself.
I have taught history on the high school and college levels, and am or have been a lecturer at the Smithsonian, The National Institutes of Health, and numerous colleges and universities, mostly on science fiction and technology subjects.